METHOD OF CONTROL OF DEVELOPMENT OF DEPOSITS WITH THE ESTIMATION OF DEVELOPMENT OF VISCOUS PLASTIC OIL RESERVES AT THE STAGE OF WATERING OF THE PLATE Russian patent published in 2019 - IPC E21B43/00 G06Q99/00 

FIELD: oil industry.

SUBSTANCE: invention relates to a method for controlling the development of high-viscosity oil fields by quantifying the density of reserves in a watered reservoir, taking into account the influence of rheological factors on the full displacement of oil by water. Method of controlling the development of oil deposits, including geological field research wells and laboratory studies of the properties of reservoir fluids and porous media, the determination of the density of oil reserves mhS_n (m³/m² or t/m²) in the immediate vicinity of each production well, taking into account the actual water-cut of the well’s production and the current oil saturation directly related to it S_os, initial oil saturated thickness h and the reservoir porosity coefficient m, the mapping of the density of oil reserves according to the current geological field research of wells, is different in that the values of the density of oil reserves are calculated from the Bakley-Leverettas relations, taking into account the influence on the completeness of oil displacement of water by rheological factors caused by the non-Newtonian nonlinearly viscoplastic properties of oil, the value of the current oil saturation is determined by the known water cut of the production of each production well taking into account the actual pressure gradient according to the graphs of the fractional flow function ƒ(S), which is calculated on the basis of the nonlinear dependence of the filtration rate of oil on the pressure gradient according to the above mathematical equation.

EFFECT: technical result is the calculation of the process of irrigation of oil deposits with proven nonlinear viscous-plastic properties with the help of the transformed function of fractional flow, which makes it possible to take into account the influence of rheological factors on the completeness of oil displacement by water when estimating the density of oil reserves.

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